Each writer has major ideas that he adopts and calls for and considers it his message and then invests it in different ways to produce different books. The safety of Moses is a major idea that revolves around it in most of his books: that a person was not created in the world to work only, and he was not created in the world to leave it before he enjoyed it, and he was not created in the world in order to waste his energy and life away from his human duties, and that a person must He always exploits his time _ and until the end of his life - in education and self -raising .. In this book he invests his idea, which he considered his basic cause, in writing about our lives after the fifty, and he sees that the Arab person loses his energy and vitality after the fifty, as he turns into a "dead who has not been buried "When he retires from work, this was this book to guide the elderly of how to invest their lives in the stage .